The female pregnancy rate of adult I of remnant population was higher than that of naturals, the litter size of remnant population was 3 32,that of naturals was 2 85. The significant difference was not found.

The population reproduction of A podemus agrarius in Yuqing county of Guizhou was investigated from1987～1995.A total numberof 3964,specimens were collected and dissected,among which 1966 were males.and 1998 females.In main breeding season,the mean pregnent rate,Iitter size and teproductive index ofeight years were 46.83%,5.48±0.06 and 1.28±0.07 respeclively.The fluctuations of the rate of testis inscrotum and the rate of female pregnancy were identificd.The reproductive difference among the age groupswas...

The population reproduction of A podemus agrarius in Yuqing county of Guizhou was investigated from1987～1995.A total numberof 3964,specimens were collected and dissected,among which 1966 were males.and 1998 females.In main breeding season,the mean pregnent rate,Iitter size and teproductive index ofeight years were 46.83%,5.48±0.06 and 1.28±0.07 respeclively.The fluctuations of the rate of testis inscrotum and the rate of female pregnancy were identificd.The reproductive difference among the age groupswas significant.

Two populations of plateau zokor one was removed part and another was not in alpine meadow were studied by comparison in Haibei, Qinghai province from May 1995 to October 1996. The natural population density was significantly higher than that of remnants. 470 zokors were captured from two populations in 1996. There was significant difference in age structure between two population in May ( X 2 =9 97, P <0 05), moreover, strongly significant difference in July and October, respectively ( X 2 =15 ...

Two populations of plateau zokor one was removed part and another was not in alpine meadow were studied by comparison in Haibei, Qinghai province from May 1995 to October 1996. The natural population density was significantly higher than that of remnants. 470 zokors were captured from two populations in 1996. There was significant difference in age structure between two population in May ( X 2 =9 97, P <0 05), moreover, strongly significant difference in July and October, respectively ( X 2 =15 134, X 2 =15 612 , P <0 01). Adult I of remnant in May occupied 53 45% was strongly higher than that of naturals that occupied 29 69%. However, Adult II of remnant only occupied 34 48% was lower than that of naturals (48 44%) in same period. Age classes of natural population were relatively stable in different season, but remnants were not. The total of Juvenile and Subadult in remnant occupied 35 06% was higher than that in natural (22 00%) in July. There was significant difference in age structure between two populations in October. Adult of remnant occupied 51 35% was significantly different with naturals (23 01%), Olders and Oldests only occupied 9 62% was significant lower than that of naturals (23 08%). The body length and weight in all age classes were not significantly different. But, the body weight of male showed significantly positive correlation with age class. The female pregnancy rate of adult I of remnant population was higher than that of naturals, the litter size of remnant population was 3 32,that of naturals was 2 85. The significant difference was not found.

The reproduction of population of Apodemus chevieri in Dafang county of Guizhou province was investigated during 1996～1998. A total of 520 specimens were collected and dissected, among which 264 were female and 256 male. In main propagating season, the mean pregnancy rate, litter size and reproductive index were 18 .62%, 6. 03 and 0. 6846, respectively. The fluctuations of the rate of testis in serotum were identical with the rate of female pregnancy.